622447829 has 2 divisors, whose sum is σ = 622447830. Its totient is φ = 622447828.

The previous prime is 622447769. The next prime is 622447831. The reversal of 622447829 is 928744226.

622447829 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 417098929 + 205348900 = 20423^2 + 14330^2 .

It is a cyclic number.

It is not a de Polignac number, because 622447829 - 2²⁴ = 605670613 is a prime.

Together with 622447831, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 622447829.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (622446829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311223914 + 311223915.

It is an arithmetic number, because the mean of its divisors is an integer number (311223915).

Almost surely, 2^622447829 is an apocalyptic number.

It is an amenable number.

622447829 is a deficient number, since it is larger than the sum of its proper divisors (1).

622447829 is an equidigital number, since it uses as much as digits as its factorization.

622447829 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 44.

The square root of 622447829 is about 24948.9043647211. The cubic root of 622447829 is about 853.8226120495.

The spelling of 622447829 in words is "six hundred twenty-two million, four hundred forty-seven thousand, eight hundred twenty-nine".